Nonvolatile memory and apparayus and method for deciding data validity for the same

a non-volatile memory and data validity technology, applied in the direction of digital storage, instruments, error detection/correction, etc., can solve the problems of increasing the capacity required to store data, frequent unexpected power failure, waste of space in non-volatile memory, etc., and achieve the effect of wasting spa

Active Publication Date: 2007-08-16
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Claims
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Benefits of technology

[0023]The present invention provides a nonvolatile memory and an apparatus and method for deciding data validity for the same. Validity of data bits stored in the nonvolatile memory can be decided quickly and exactly while the waste of a space in the nonvolatile memory is avoided in the case of an unexpected power failure in the nonvolatile memory. Also, the nonvolatile memory has a memory cell that stores data bits of a plurality of pages through a plurality of states realized by at least two bits.

Problems solved by technology

Unexpected power failure frequently occurs in a system based on the nonvolatile memory in view of the application field of the system.
However, if the mirror data 22 and 23 are written to decide validity of the data, the capacity required to store the data increases, whereby waste of a space in the nonvolatile memory becomes a problem.
For this reason, a problem occurs in that validity of the data is decided in error.
However, this related art fails to disclose a method of deciding data validity in the case of an unexpected power failure.

Method used

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  • Nonvolatile memory and apparayus and method for deciding data validity for the same

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Embodiment Construction

[0036]Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The aspects and features of the present invention and methods for achieving the aspects and features will be apparent by referring to the exemplary embodiments to be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the exemplary embodiments disclosed hereinafter, but can be realized in diverse forms. The matters defined in the description, such as the detailed construction and elements, are nothing but specific details provided to assist those of ordinary skill in the art in a comprehensive understanding of the invention, and the present invention is only defined within the scope of the appended claims. In the entire description of the exemplary embodiments of the present invention, the same drawing reference numerals are used for the same elements across various figures.

[0037]The p...

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Abstract

Provided are a nonvolatile memory and an apparatus and method for deciding data validity for the same, in which validity of data stored in the nonvolatile memory can be decided. The nonvolatile memory includes a memory cell storing data bits in a plurality of pages included in a predetermined block through a plurality of states realized by at least two bits. The block includes a first page in which data bits for determining validity of data bits written by a user are stored, and a second page in which the data bits written by the user are stored.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority from Korean Patent Application No. 10-2006-0015197 filed on Feb. 16, 2006 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]Apparatuses and methods consistent with the present invention relate to a nonvolatile memory and an apparatus and method for deciding data validity for the same, and more particularly, to a nonvolatile memory and an apparatus and method for deciding data validity for the same, in which validity of data stored in the nonvolatile memory can be decided.[0004]2. Description of the Related Art[0005]Generally, embedded systems, such as electric home appliances, communication devices, and set top boxes, widely employ a nonvolatile memory as a storage medium that stores data.[0006]A flash memory, which is mainly used as the nonvolatile memory, is a nonvolatile m...

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11C7/10
CPCG06F11/1068G11C7/1006G06F11/1072G06F12/00
Inventor KIM, JIN-KYUYOON, SONG-HOWOO, NAM-YOON
Owner SAMSUNG ELECTRONICS CO LTD
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